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  <title>Rewind the file to the first line</title>
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    <li>Rewind the file to the first line</li>
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  <div id="layout-content"><div id="splfileobject.rewind" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">SplFileObject::rewind</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.1.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">SplFileObject::rewind</span> &mdash; <span class="dc-title">Rewind the file to the first line</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-splfileobject.rewind-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>SplFileObject::rewind</strong></span>(): <span class="type"><span class="type void">void</span></span></div>

  <p class="para rdfs-comment">
   Rewinds the file back to the first line.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-splfileobject.rewind-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-splfileobject.rewind-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   没有返回值。
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-splfileobject.rewind-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   Throws a <span class="classname"><a href="class.runtimeexception.html" class="classname">RuntimeException</a></span> if cannot be rewound.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-splfileobject.rewind-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3723">
    <p><strong>示例 #1 <span class="methodname"><strong>SplFileObject::rewind()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$file&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SplFileObject</span><span style="color: #007700">(</span><span style="color: #DD0000">"misc.txt"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;Loop&nbsp;over&nbsp;whole&nbsp;file<br /></span><span style="color: #007700">foreach&nbsp;(</span><span style="color: #0000BB">$file&nbsp;</span><span style="color: #007700">as&nbsp;</span><span style="color: #0000BB">$line</span><span style="color: #007700">)&nbsp;{&nbsp;}<br /><br /></span><span style="color: #FF8000">//&nbsp;Rewind&nbsp;to&nbsp;first&nbsp;line<br /></span><span style="color: #0000BB">$file</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">rewind</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">//&nbsp;Output&nbsp;first&nbsp;line<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">$file</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">current</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-splfileobject.rewind-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="splfileobject.current.html" class="methodname" rel="rdfs-seeAlso">SplFileObject::current()</a> - Retrieve current line of file</span></li>
    <li class="member"><span class="methodname"><a href="splfileobject.key.html" class="methodname" rel="rdfs-seeAlso">SplFileObject::key()</a> - Get line number</span></li>
    <li class="member"><span class="methodname"><a href="splfileobject.seek.html" class="methodname" rel="rdfs-seeAlso">SplFileObject::seek()</a> - Seek to specified line</span></li>
    <li class="member"><span class="methodname"><a href="splfileobject.next.html" class="methodname" rel="rdfs-seeAlso">SplFileObject::next()</a> - Read next line</span></li>
    <li class="member"><span class="methodname"><a href="splfileobject.valid.html" class="methodname" rel="rdfs-seeAlso">SplFileObject::valid()</a> - Not at EOF</span></li>
   </ul>
  </p>
 </div>


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